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Silencing film for automobile

A sound-absorbing, film-based technology, applied in adhesives, vehicle parts, film/sheet adhesives, etc., can solve the problems that paste sealants are difficult to meet the requirements, and achieve the effect of easy use and good manufacturability

Inactive Publication Date: 2009-08-05
广州市东明扬汽车部件有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

One of the main sources of noise during the operation of the car is the door, and the paste sealant is only suitable for small gaps and sound attenuation of horizontal thin plates. It is difficult for the paste sealant to meet the requirements for the high sound attenuation performance of the car door. Therefore, it is necessary to develop a product with high noise reduction and vibration reduction performance and easy to use, so as to improve the comfort of the car

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Embodiment 1: The sound-absorbing film for automobiles is a composition composed by weight percentage, and its component composition and the weight percentage of each component are:

[0026] Polyisobutylene 10%

[0027] Polyvinyl chloride resin 9.6%

[0028] Terpene resin 10.5%

[0029] Naphthenic oil 10%

[0030] Mica powder 38%

[0031] Active Nano Calcium Carbonate 15.6%

[0032] Reinforcing carbon black 6.3%

[0033] The method for preparing the sound-absorbing film for automobiles comprises the following steps:

[0034] a, 10% polyisobutylene, 9.6% polyvinyl chloride resin, 10% naphthenic oil, 38% mica powder, 15.6% active nano-calcium carbonate and 6.3% reinforcing carbon black are mixed, stirred evenly, Rolled into a soft solid on a two-roll mill;

[0035] b. 10.5% terpene resin is fully kneaded in a kneader with soft solids;

[0036] c. Use a screw extruder to extrude on the release paper according to the product size requirements;

[0037] d. After app...

example 2

[0038] Example 2: The sound-absorbing film for automobiles is a composition composed by weight percentage, and its component composition and the weight percentage of each component are:

[0039] Butyl Rubber 14%

[0040] Neoprene 2.0%

[0041] Vinyl chloride-vinyl acetate copolymer resin 8.3%

[0042] Petroleum resin 8.7%

[0043] Low molecular weight polyester 5.6%

[0044] 32# engine oil 7.8%

[0045] Aluminum silicate 26.6%

[0046] Active Nano Calcium Carbonate 18.2%

[0047] Precipitated silica 6.4%

[0048] Reinforcing carbon black 2.4%

[0049] The method for preparing the sound-absorbing film for automobiles comprises the following steps:

[0050] a, 14% butyl rubber, 2.0% chloroprene rubber, 8.3% vinyl chloride-vinyl acetate copolymer resin, 5.6% low-molecular polyester, 7.8% 32# machine oil, 26.6% aluminum silicate, 18.2% active nano-calcium carbonate, 6.4% precipitated white carbon black and 2.4% reinforcing carbon black are mixed, stirred evenly, and rolle...

example 3

[0054] Example 3: The sound-absorbing film for automobiles is a composition composed by weight percentage, and its component composition and the weight percentage of each component are:

[0055] Chlorobutyl Rubber 19.2%

[0056] Acrylic resin 12%

[0057] Coomalon resin 3.8%

[0058] Glyceryl Rosin Ester 3.7%

[0059] Butyl benzyl phthalate 6.6%

[0060] Talc 27.2%

[0061] Active Nano Zinc Oxide 10.4%

[0062] Precipitated silica 5.5%

[0063] Reinforcing carbon black 1.6%

[0064] The method for preparing the sound-absorbing film for automobiles comprises the following steps:

[0065] a, 19.2% chlorinated butyl rubber, 12% acrylate resin, 16.6% butyl benzyl phthalate, 27.2% talcum powder, 10.4% active nano zinc oxide, 5.5% precipitated white carbon Black and 1.6% reinforcing carbon black are mixed, stirred evenly, and rolled into a soft solid on a two-roll mill;

[0066] B. 3.8% Coomalon resin and 3.7% glycerol rosin ester are fully kneaded together in a kneader wit...

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Abstract

The invention relates to a binding material, in particular to an automobile sound deadening film which is used on metal plates for locally reinforcing the metal plates and particularly on automobile doors to reduce noises generated by the vibration of a running automobile. The automobile sound deadening film is prepared by mixing and extruding 10-25 percent of synthetic rubber, 5-15 percent of thermoplastic resin, 5-20 percent of thickening resin, 10-25 percent of plasticizing agent, 25-50 percent of vibration damping and sound deadening agent, 10-20 percent of oil absorbing and filling agent and 5-10 percent of reinforcing filling material. The automobile sound deadening film can be used for the large-area sound deadening and vibration damping of the metal plates during the automobile manufacturing process. When being used, the automobile sound deadening film can be operated by hands, is innoxious and odorless, is easy to separate from release paper, has good manufacturability, can not shift after being pasted, is less susceptible to oil washing, phosphating process, electrophoresis, paint spraying and drying, and other subsequent automobile body manufacturing processes and is convenient to use.

Description

technical field [0001] The invention relates to an adhesive material, in particular to a sound-absorbing film for automobiles, which can reduce the noise generated by vibration during automobile operation and has a local reinforcing effect on the metal plate of the vehicle body. Background technique [0002] Paste sealants are usually used for sealing and noise reduction in the automobile body manufacturing process. One of the main sources of noise during the operation of the car is the door, and the paste sealant is only suitable for small gaps and sound attenuation of horizontal thin plates. It is difficult for the paste sealant to meet the requirements for the high sound attenuation performance of the car door. Therefore, it is necessary to develop a product with high noise reduction and vibration reduction performance and easy to use, so as to improve the comfort of the car. Contents of the invention [0003] The object of the present invention is to provide a sound-a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J7/04C09J123/22C09J111/00C09J127/06C09J133/08C09J167/00C09J157/02C09J123/20C09J193/04C09J11/00B60R13/08
Inventor 李建武高之香王永明李士学吴子刚王艳芳
Owner 广州市东明扬汽车部件有限公司
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